Langer's Sudoku Assistant

Invalid Sudoku!

Column 3 is invalid. Go back and make a different choice.

 

6
2
3
7
8
4
5
9
1
1
7
4
9
6
5
3
8
2
8
5
9
2
1
3
6
4
7
9
1  2  3
4  5  6
7  8  9
7
8
3
6
1
5
2
2
3
8
5
9
1
6
4
7
1
6
5
7
2
4
3
9
8
8
1
6
3
4
5
2
7
9
7
1  2  3
4  5  6
7  8  9
9
8
2
6
4
5
3
4
3
2
9
7
1
1  2  3
4  5  6
7  8  9
8
6

 

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